/*
 * Copyright (C) 2025 Thomas Akehurst
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.tomakehurst.wiremock.common.xml;

import static com.github.tomakehurst.wiremock.common.Exceptions.uncheck;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

class BuilderPerThreadDocumentBuilderFactory extends DelegateDocumentBuilderFactory {

  // DocumentBuilder is NOT thread safe.
  private final ThreadLocal<DocumentBuilder> documentBuilderThreadLocal;

  BuilderPerThreadDocumentBuilderFactory(DocumentBuilderFactory delegate) {
    super(delegate);
    this.documentBuilderThreadLocal =
        ThreadLocal.withInitial(() -> uncheck(delegate::newDocumentBuilder, null));
  }

  @Override
  public DocumentBuilder newDocumentBuilder() {
    return documentBuilderThreadLocal.get();
  }
}
